Alfred c



no Model.

A; G. HOBBS.

MACHINE FOR HEADING CARTRIDGE SHELLS.

No. 273,734. Patented Mar. 13,1883.

NITED STATES PATENT Fierce.

ALFRED C. HOBBS, OF BRIDGEPORT, CONNECTICUT.

SPECIFICATION forming part of Letters Patent No. 273,734, dated March13, 1883.

Application filed December 22, 1882.

To all whom it may concern: 0

Be it known that I, ALFRED C. Hones, of Bridgeport, Connecticut, haveinvented a certain Improvement in Machines for Heading or Re-EntorcingCartridge-Shells, of which the following is a specification.

My improvement concerns means for affording and adjusting the springhearing which supports the yielding mandrel of a cartridge-press duringthe operation of head ing or re-enforcing cartridge-shells.

The accompanying drawing of a vertical cartridge header or press is acentral vertical section, showing so much of the machine as is necessaryto illustrate the application to it of my improvement.

The machine has asubstantial bed, A, supported on suitable legs, A, andprovided on the top with the usualstandards, one of which, A is shown inthe drawing, for supporting the boxes in which the crank-shaft B has itsbearings, and also for supporting the ways or guides for the carriage U,in the lower end of which the punch c is secured. The adjustable pitmanor link 0 connects the carriage C with the crank-pin B in the usualmanner. The usual dial, D, is mounted upon the vertical shaft d, whichis inserted in the bed A. The dial is provided with the usualperforations, D, in the upper ends of which the female dies D aredeposited. Each die is provided with the interior mandrel, E, which iscentralized relatively to the die by the bearing of the periphery of itsenlarged base against the wall of the lower part of the perforations Din the dial. These mandrels, as is customary, tit with sufficientlooseness to admit of their being moved longitudinally. The dial is soarranged relatively to the punch that when brought to rest one of thedies D is brought into alignment immediately under the punch. Prior toarriving at that point the base ofthe mandrelhas been supportedon thetop ofthe bed A. When brought into alignment with the punch the baseofthe mandrelrests upon the upper end of thelongitudinally-yieldingpost, F, the lower end,f, ofwhich is seated in the hemi sphericalcavityf, formed in the center of the top of the disk G, the lower sideof which, 9, is recessed and bears upon the upper end of the spiralspring, H. The lower end of the spring H bears upon the recessed upperside, g, of the similar disk, G, provided upon its under side with thehemispherical cavity 7:,

(No model.)

for the reception of the upper end of the vertical adj usting-boltI,which isinserted through the yoke K. The yoke K is secured to the underside of the bed A by means of the vertical bolts and nuts, k k. The boltI is made vertically-adjustable by means of the jamnutsi and 5, thelower one of which bears upon the washer i which rests upon the surfaceK oftheyoke. The post F islikewise provided with jam-nuts f and f theupper one of which abuts against the washerf which bears upon the underside of the bed A. The object of thejam-nutsf andf is to limit the rangeof upward movement of the post F; and the object in vertically adjustingthe bolt I is to vary the tension of the expanding spiral spring H,which, as will be seen, is confined between the two disks G and G, theopposed recessed faces of which respectively receive and centralizetheopposite ends of the spiral spring. By this organization of theparts, however, the tension of the supportingspring may be varied. Thedirection in which the force of the supporting-spring is exerted ismaintained in vertical alignment with the axes of the mandrel, punch,and post F.

For convenience of inserting the mandrels into the lower ends of theperforations D of the dial, a vertical hole, L, is form ed through thefront part of the table, the upper end of which terminates in the curvedpath pursued by the bases of the mandrels when the dial is rotated. Theupper end of the hole L is provided with the sliding cover l, which canbe removed to allow the mandrels to drop from the dial through the holeL, and to permit the insertion of mandrels into the holes D in the dial.

I claim as my invention in a cartridge-press substantially such asdescribed- 1. The spiral spring H, arranged with its axis in alignmentwith the longitudinal axes of the post F, and the adjusting-bolt I, incombination with a mandrel, E, interposed between the post F and thepunch c.

2. The yoke K, applied to the bed-plate A, in combination with theadjusting-bolt I, the yielding post F, the recessed disks G and G, andthe spiral spring H, substantially as shown and described.

ALFRED U. HOBBS.

